Explain the problem as you see it
Tana currently allows the user to read a PDF file without leaving the app. Currently, however, extracting text from that PDF requires to manually copy the relevant text or switch to a different app (e.g. Readwise Reader)
Why is this a problem for you?
Both manually copying the relevant text from the PDF or switching to a different app (e.g. Readwise Reader) create frictions.
Suggest a solution
Integrate in Tana a native PDF annotator that would allow users to annotate files PDF documents once these have been added to Tana and export these annotations as nodes.